Figure 10.14 ARGO floats are widely used by the
oceanographic community to measure deeper currents at a depth of 1
km in the ocean, and to profile temperature and salinity as a function
of depth between 2 km and the surface. To ascend, the hydraulic pump
moves oil from an internal reservoir to an external bladder, reducing
the drifter’s density. To
descend, the latching valve is opened to allow oil to flow back into the internal
reservoir. The antenna is
mounted to the end cap. Sensors measure temperature and salinity on ascent.
From the ARGO
Project.